/Engine/Source/Developer/MeshMergeUtilities/Public/IMeshMergeUtilities.h
Merges static mesh components into a single actor with multiple instanced static mesh components
void
void MergeComponentsToInstances ( const [TArray](API\Runtime\Core\Containers\TArray)< [UPrimitiveComponent](API\Runtime\Engine\Components\UPrimitiveComponent) * > & ComponentsToMerge, [UWorld](API\Runtime\Engine\Engine\UWorld) * World, [ULevel](API\Runtime\Engine\Engine\ULevel) * Level, const [FMeshInstancingSettings](API\Runtime\Engine\Engine\FMeshInstancingSettings) & InSettings, bool bActuallyMerge, bool bReplaceSourceActors, [FText](API\Runtime\Core\Internationalization\FText) * OutResultsText ) const